My latest post on O'Reilly's Inside iPhone is A Glimpse of Our Tethering Future where I recount my experiences working with a Nokia E71 and an application called JoikuSpot that turns the E71 into a 3G-powered ad hoc WiFi access point that you can carry in your pocket.

My use of the Nokia E71 is courtesy of the Nokia Blogger Relations Program.

After a solid week of 3G phone use with laptop (and iPhone) tethering, I've convinced myself that my concerns about iPhone battery consumption while running an application like Netshare from Nullriver are overblown. This can work and any increased battery use can be managed.